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Thrincoceras subquadratum
Taxonomy
Thrincoceras subquadratum was named by Shimanskiy (1990). Its type specimen is PIN 1626/293 and is a 3D body fossil. Its type locality is Lena River, 3 km below mouth of Sobol River, which is in an Artinskian marine siliciclastic in the Echii Formation of the Russian Federation.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Thrincoceras subquadratum Shimanskiy p. 70 figs. Pl 1, figs 3,4 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Thrincoceras subquadratum Shimanskiy 1990
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 49.0 | |||||
| shell diameter | 1 | 123.0 | |||||
| shell inflation | 1 | 47.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Artinskian or 290.10000 to 279.30000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Artinskian | Russian Federation | Thrincoceras subquadratum (type locality: 95674 95675 95676) |